Usercard - Discover and share everywhere you are officially online.

Google Contacts - Google Contacts is Google's contact management tool that is available in its free email service Gmail, as a standalone service, and as a part of Google's business-oriented suite of web apps Google Apps.

Follr - Follr is a personal website for individuals to organize identities, content and contacts into one...

Apple Contacts App - Access and edit your contacts from personal, business, and other accounts with the Contacts app.

about.me - About.me lets you quickly build simple and visually elegant splash pages that points visitors to your content from around the web. Get started today.

Windows Contacts - Windows has many extraordinary organizers, and in the event that you include distributed storage, then you presumably have more.